Step-by-step configuration – NETGEAR 54 Mbps Wireless ADSL Firewall DG834G User Manual
Page 157
Wireless ADSL2+ Modem Router DG834G User Manual
NETGEAR VPN Configuration
B-7
v1.0, May 2008
Using a Fully Qualified Domain Name (FQDN)
Many ISPs (Internet Service Providers) provide connectivity to their customers using dynamic
instead of static IP addressing. This means that a user’s IP address does not remain constant over
time, which presents a challenge for gateways attempting to establish VPN connectivity.
A Dynamic DNS (DDNS) service allows a user whose public IP address is dynamically assigned
to be located by a host or domain name. It provides a central public database where information
(such as e-mail addresses, host names, and IP addresses) can be stored and retrieved. Now, a
gateway can be configured to use a third-party service in lieu of a permanent and unchanging IP
address to establish bi-directional VPN connectivity.
To use DDNS, you must register with a DDNS service provider. Some DDNS service providers
include:
•
DynDNS: www.dyndns.org
•
TZO.com: netgear.tzo.com
•
ngDDNS: ngddns.iego.net
In this example, Gateway A is configured using an example FQDN provided by a DDNS Service
provider. In this case we established the hostname dg834g.dyndns.org for Gateway A using the
DynDNS service. Gateway B uses the DDNS service provider when establishing a VPN tunnel.
To establish VPN connectivity, Gateway A must be configured to use Dynamic DNS, and
Gateway B must be configured to use a DNS host name provided by a DDNS service provider to
find Gateway A. Again, the following step-by-step procedures assume that you have already
registered with a DDNS service provider and have the configuration information necessary to set
up the gateways.
Step-By-Step Configuration
1. Log in to the DG834G v5 labeled Gateway A as in the illustration.
Out of the box, the DG834G v5 is set for its default LAN address of http://192.168.0.1 with its
default user name of admin, and default password of password. This example assumes that
you have set the local LAN address as 10.5.6.1 for Gateway A and have set your own
password.
2. On the DG834G v5, configure the Dynamic DNS settings.
Note: Product updates are available on the NETGEAR website at